use crate::config::{ModToml, Module};
use crate::prompt::multi_select;

#[derive(Debug)]
struct NamedModule(String, Module);
impl ToString for NamedModule {
    fn to_string(&self) -> String {
        self.0.clone()
    }
}

fn install_mod(m: NamedModule) {
    let spinner = indicatif::ProgressBar::new_spinner().with_message(format!("Installing module {}...", m.0));
    'content_iter: for entry in m.1.content {
        let src = std::path::Path::new("repo").join(&entry.0);
        if src.is_file() {
            if let Err(err) = std::fs::copy(src, entry.1) {
                println!("Failed to copy {}:\n{}", entry.0, err);
            }
            spinner.tick();
        } else {
            let dst = std::path::Path::new(entry.1.as_str());

            if let Err(err) = std::fs::create_dir_all(dst) {
                println!("Failed to create directory {}:\n{}", entry.1, err);
                continue 'content_iter;
            }

            let to_remove = match crate::utils::get_dir_content_filtered(dst, &m.1.ignore) {
                Ok(v) => v,
                Err(err) => { println!("Failed to get destination content:\n{}", err); continue 'content_iter; }
            };

            for file in to_remove.files {
                let _ = std::fs::remove_file(file);
                spinner.tick();
            }

            for dir in to_remove.directories.into_iter().rev() {
                let _ = std::fs::remove_dir(dir);
                spinner.tick();
            }
            if let Err(err) = crate::utils::copy_dir(&src, dst, &spinner) {
                println!("Failed to copy directory:\n{}", err);
            }
        }
    }
}

fn collect_mod(m: NamedModule) {
    let spinner = indicatif::ProgressBar::new_spinner().with_message(format!("Collecting module {}...", m.0));
    'content_iter: for entry in m.1.content {
        let dst = std::path::Path::new("repo").join(entry.0.as_str());
        let src = std::path::Path::new(entry.1.as_str());
        if src.is_file() {
            if let Err(err) = std::fs::copy(src, dst) {
                println!("Failed to copy {}:\n{}", entry.1, err);
            }
            spinner.tick();
        } else {
            let _ = std::fs::remove_dir_all(&dst);
            if let Err(err) = std::fs::create_dir_all(&dst) {
                println!("Failed to create directory {}:\n{}", entry.0, err);
                continue 'content_iter;
            }

            let to_copy = match crate::utils::get_dir_content_filtered(src, &m.1.ignore) {
                Ok(v) => crate::utils::trim_dir_content(v, src),
                Err(err) => { println!("Failed to get source content:\n{}", err); continue 'content_iter; }
            };

            for dir in to_copy.directories {
                std::fs::create_dir_all(dst.join(dir)).unwrap();
                spinner.tick();
            }

            for file in to_copy.files {
                std::fs::copy(src.join(&file), dst.join(&file)).unwrap();
                spinner.tick();
            }
        }
    }
}

pub fn install(config: &ModToml) {
    let to_install = multi_select(
        Some("Which modules do you want to install?"),
        config.modules.iter().map(|v| NamedModule(v.0.clone(), v.1.clone())).collect()
    );

    for m in to_install {
        install_mod(m);
    }
}

pub fn collect(config: &ModToml) {
    let to_collect = multi_select(
        Some("Which modules do you want to collect?"),
        config.modules.iter().map(|v| NamedModule(v.0.clone(), v.1.clone())).collect()
    );

    for m in to_collect {
        collect_mod(m);
    }
}

pub fn upload() {
    if !crate::repository::is_clean() {
        let msg = crate::prompt::input("Commit message");
        if !crate::repository::commit_changes(&msg) {
            println!("Failed to commit");
            return;
        }
    }
    if !crate::repository::push_repo() {
        println!("Failed to push to origin");
    }
}